+1 Geshelli Labs J2
Their customer service is second to none. I have experience with Ayre, Conrad Johnson, VAC, Audio Research, and more. For $260 you get an excellent DAC. If you want USB connection, it's $300. Go to this review, https://youtu.be/USbDI8OQP7s
Pair it with the WiiM mini or WiiM pro ($80, $150 respectively). See cheapaudioman YouTube review of them. Out performs the Mode.
I can't say you'll hear a difference from your setup, but this is as good as it gets within your budget. The Denafrips Ares II is a better DAC but it costs 3x more. That said, I'm not sure your overall system warrants the extra cost. Best of luck to you.